.wwf toolkit is a set of shell scripts to convert PDF files to .wwf files and vice versa. The resulting .wwf files are virtually indistinguishable from files created with the official WWF drivers. The PDF files the toolkit creates are fully unprotected and can be printed or manipulated by other PDF utilities.

Aspose.Email for .NET is a set of components allowing developers to easily implement email functionality within their ASP.NET Web applications, Web services, and Windows applications. It supports the Outlook PST, EML, MSG, and MHT formats. It allows developers to work with SMTP, POP, FTP, and MS Exchange servers. It supports mail merge, iCalendar, customized header and body, header information, embedded files, Twitter, and much more. It makes it easy to work with HTML or plain text email messages and their attachments.

The Cambridge Z88 Software project was created by and for the "die-hard" users of the Cambridge Z88, the iPad of the 80s. Its object is to streamline the operating system, OZ, and build new Z88 applications by replacing the built-in ROM with a larger device. It also includes a Z88 emulator and debugging environment.

DarGUI is a graphical frontend for the Disk
ARchiving utility (DAR) that aims to make it
easier and quicker to perform common backup tasks
using DAR. It uses the GTK+ library, which is
installed on most Linux distributions, so usually
the only additional dependency is DAR. DarGUI aims
to complement and enhance the command line
features of DAR rather than conceal them, and to
help users to learn how DAR works so that they can
use it from the command line when necessary. It is
written in Pascal using FreePascal and the Lazarus
IDE.

Five Hundred is a card game for four players similar to Euchre or Bridge, especially popular in Australia and New Zealand. The wikipedia page has a comprehensive description of gameplay. This version is implemented in C++/Qt. It incorporates graphics from the svg-cards project. Computer players are scriptable in Lua.

Giada is a minimal, hardcore audio tool for DJs and live performers. Just pick your sample, drop it in any channel, and start the show by using this tiny piece of software as a loop machine, drum machine, sequencer, live sampler, or effect (VST) host. Giada aims to be a compact and portable virtual device for production use and live sets.

MegaGlest is a real-time strategy game for up to eight players with a pseudo historic/fantasy theme and 3D graphics. Modding is easy thanks to simple XML formats and Blender export to the open G3D model format.

MrsWatson is a commandline audio plugin host. It takes one or more plugins, sends an audio signal to them for processing, and saves the resulting output. Although the plugins think they are running in realtime, processing is actually done offline (this is not the same as the "offline" processing in VST terminology). This makes MrsWatson ideal for developing or debugging plugins, or processing audio on a server.